Home / 71,840.35-99,142.75-40,009.25

Finding the Fourth Proportional to 71,840.35, 99,142.75 and 40,009.25

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Solution

The fourth proportional to 71,840.35, 99,142.75 and 40,009.25 is: 55,214.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,840.35 : 99,142.75 = 40,009.25 : x
  2. Step 2: Convert to fraction form
    71,840.35/99,142.75 = 40,009.25/x
  3. Step 3: Cross multiply
    71,840.35x = 99,142.75 × 40,009.25
  4. Step 4: Simplify right side
    71,840.35x = 3,966,626,574.72
  5. Step 5: Solve for x
    x = 3,966,626,574.72/71,840.35
  6. Step 6: Final answer
    x = 55,214.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.